public static function ShareaholicPublic::post_first_image in Share Buttons, Related Posts, Content Analytics - Shareaholic 8

Same name and namespace in other branches

1. 7.3 public.php \ShareaholicPublic::post_first_image()

Copied straight out of the wordpress version, this will grab the first image in a post.

Return value

mixed either returns `false` or a string of the image src

1 call to ShareaholicPublic::post_first_image()

ShareaholicPublic::get_image_url_for in ./public.php

Get image used in a piece of content

File

./public.php, line 259

Class

ShareaholicPublic

This class is all about drawing the stuff in publishers' templates that visitors can see.

Code

public static function post_first_image($body) {
  preg_match_all('/<img.*?src=[\'"](.*?)[\'"].*?>/i', $body, $matches);
  if (isset($matches) && isset($matches[1][0])) {

    // Exclude base64 images; meta tags require full URLs
    if (strpos($matches[1][0], 'data:') === false) {

      // file_create_url function doesn't convert paths starting with "/" so check for "/" and trim it off if present
      if (substr($matches[1][0], 0, 1) === "/") {
        $first_img = substr($matches[1][0], 1);
      }
      else {
        $first_img = $matches[1][0];
      }
    }
  }
  if (empty($first_img)) {

    // return false if nothing there, makes life easier
    return false;
  }
  return file_create_url($first_img);
}